About: http://webisa.webdatacommons.org/423166162

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	They are well known in Europe, and mostly rely on volunteers (enthousiasts) to keep it running.
http://www.w3.org/ns/prov#wasQuotedFrom	airliners.net